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Sodium borohydride → [5-Chloro-3-(4-chloro-phenyl)-1-phenyl-1H-pyrazol-4-yl]-methanol

HRID 1283205
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반응식

HRID 1283205 반응식
[BH4-].[Na+].[Cl:3][C:4]1[N:8]([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)[N:7]=[C:6]([C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][CH:16]=2)[C:5]=1[CH:22]=[O:23]>CN(C)C=O.O>[Cl:3][C:4]1[N:8]([C:9]2[CH:10]=[CH:11][CH:12]=[CH:13][CH:14]=2)[N:7]=[C:6]([C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][CH:16]=2)[C:5]=1[CH2:22][OH:23]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 2

HCID 4311764Sodium borohydrideHCID 214183605-Chloro-3-(4-chlorophenyl)-1-phenyl-1H-pyrazole-4-carbaldehyde

생성물 1

HCID 53664379[5-Chloro-3-(4-chloro-phenyl)-1-phenyl-1H-pyrazol-4-yl]-methanol수율 95%

시약·촉매·용매 2

HCID 962Water용매HCID 6228Dimethylformamide용매

실험 절차

2.8 g of sodium borohydride are added to a suspension of 46.4 g of 5-chloro-3-p-chlorophenyl-1-phenyl-pyrazole-4-carboxaldehyde in 700 ml of dimethylformamide and 100 ml of water, the temperature possibly rising to 35°. After 30 minutes purification is carried out with active charcoal, precipitation is carried out with 700 ml of water and the precipitate is well washed. 5-Chloro-3-p-chlorophenyl-4-hydroxymethyl-1-phenyl-pyrazole is obtained with a 95% yield; F 152.5°-153.5° (from acetone).

후처리

  1. custompossibly rising to 35°
  2. customAfter 30 minutes purification
  3. customis carried out with active charcoal, precipitation
  4. washthe precipitate is well washed

출처 및 근거

ORD 기록
ord-47aadad220274fcbb3d0d66befd4819e
출처 데이터셋
uspto-grants-1976_08
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US03974176

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